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arXiv · 2610.20202

A hybrid quantum interferometer bridging Hong-Ou-Mandel and N00N-state interference

Zi-Qi Zeng·Samuel Corona-Aquino·Tao Xie·Bin Yin·Yan Guo·Yukun Song·Yun Meng·Kai Zou·Song Li·Xiaolong Hu·Alfred B. U'Ren·Roberto de J. León-Montiel·Chenglong You·Baihong Li·Dongzhou Wang·Rui-Bo Jin
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Abstract

Hong-Ou-Mandel (HOM) interference offers robustness in high-noise environments due to its phase-insensitive nature, while N00N-state interference provides enhanced phase sensitivity for precision measurements in low-noise settings. However, their realizations have typically required separate experimental platforms. Here, we report a single hybrid quantum interferometer that can dynamically transition between HOM and N00N-state interference by adjusting two time delays, $τ_1$ and $τ_2$. This tunability enables operation in phase-insensitive, phase-sensitive, or hybrid modes within a unified setup, as confirmed by theoretical analysis and experimental demonstration. Our system offers a versatile platform with potential for quantum sensing applications, paving the way for integrated quantum technologies capable of adapting to diverse noise conditions.

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Zi-Qi Zeng, Samuel Corona-Aquino, Tao Xie, Bin Yin, Yan Guo, Yukun Song, Yun Meng, Kai Zou, Song Li, Xiaolong Hu, Alfred B. U'Ren, Roberto de J. León-Montiel, Chenglong You, Baihong Li, Dongzhou Wang, Rui-Bo Jin. 2026-10-14. A hybrid quantum interferometer bridging Hong-Ou-Mandel and N00N-state interference. https://doi.org/10.1103/pd91-dyf9

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